Arc-lamp.



J. W. KENDRIGK.

. ABC LAMP.

APPLICATION FILED 11:11.17, 1910.

1,007,003, Patented Oct. 24, 1911.

1 snnm's snnm 1.

WHFIT im I i /06 l? g MM 1 1 3mm J. W. KENDRIGK.

ARC LAMP.

APPLICATION FILED PEB.17, 1910.

1,007,003, Patented Oct. 24, 1911i 7 SHEETS-SHEET 2.

lI-IIIIIIIIIIIIIIIIIIIllllllllnll I I J I I 'lT/VESSES A 9 /0 [N I 75[VT 01? J. W. KENDRIGK.

Patented Oct. 24, 191 1.

7 SHEETS-BHBBT 3.

.I- 4 m 6 y a 4 9 w z 0 70 cm r [1V VEN T 01? J. W. KENDRIGK.

ARG LAMP.

APPLICATION FILED PEB.17, 1910.

1,0073003. Patented 001;. 24, 1911.

7 SHEETSSHEBT 4.

Allomey J. W. KENDRIGK.

ARG LAMP.

APPLIOATION I'ILIJD rmmv, 1910.

Patented Oct. 24, 1911.

7 8HEETSSHEET 5.

J. W. KENDRIGK.

Patented Oct. 24, 1911.

'7 SHEETS-SHEET 6.

J. W. KENDRIOK.

ARC LAMP. APPLICATION FILED FEB.17.1910.

Patented Oct. 24, 1911.

7 $HEETSSHEET 7.

attommg UNITED STATES PATENT .onn on.

JOHN W. KENDBIGK, OF FRANKLIN, PENNSYLVANIA, ASSIGNOR OF ONE-HALF 'fO-IRA. GRIFFEN, 0F FRANKLIN, PENNSYLVANIA.

. ARC-LAMP.

To all whom it may concern: I

Be it known that I, JOHN W. KnNnRIoK, a citizen of the United States,residing at Franklin, in the county of Venango and State ofPennsylvania, have invented certain new and useful Improvements in Are-Lamps, of which the following is a specifi-- revolution of theelectrodes is so'controlled- 015 regulated that a uniform and steadymovement of the same is obtained.

The invention still further consists of the peculiar and novelconstruction of certain other parts of the apparatus, their generalarrangement and combination, as will be hereinafter more fully describedin this specification, and briefly stated in the claims.

The-chief object .of the invention is to produce a lamp of the typementioned, which is readily adaptable either as a search light .or asuitable light-producing medium in exhibiting moving pictures. 7

Another object of the invention is to provide a lamp which, after theelectrodes are set to arcing-position, will run for several hourswithout further attention, so that the attention of theoperato-r may begiven wholly to the manipulation of the searchlight or the movingpicture apparatus, as the case may be.

Other objects of the invention will become apparent upon acompletedisclosure thereof.

In the drawings :Figure 1 is an' elevation of one side of the machine orlamp;

Fig. 2 is a similar view of. the opposite side; Fig. 3 is a frontelevation Fig. 3 is a detail, in section, of the means for locking thegear-wheel on the winding-shaft thereto; Fig. 4 is a top plan view,partly in. section, of one of the flexible connections by which theelectrodes are permitted to have avertical and lateral movement; Fig. 5is a similar view of the mechanism forautomati-' Specification ofLetters Patent. Patented Oct. Application filed February 17, 1910.Serial No. 544,463.

cally feeding the upper electrode; Fig. 5 is a bottom plan,. somewhatenlarged o the same; Fig. 5 is an enlarged detail, in vertical section,of the setting-disk and ratchet wheel carried at the lower end of thefeedsc-rew; Fig. 6 is a rear elevation of the lamp, the windingmechanism not being shown; Fig. 7 is a central, longitudinal section ofone of the electrodes and its driving mechanism; Fig. 8 is a horizontalsection taken between the electrode-carrying arms; Fig. 9 is a detailsectional view of the pivotal connection between one of theelectrodecarrying arms and the supporting column;

Fig. 10 is a plan View, partly in section, of the top plate of themotor-frame, showing the means for starting the generator or controller,Fig. 11 is a detached perspective view of the governor or controller;Fig. 12 is a front elevation of the mechanism for automatically settingthe feeding mechanism; Fig. 13 is a side elevation of the same;

ig. 14; is a perspective view of the settingmechanism, detached; andFig. 15 is a detail thereof.

In the several views, the numeral 1 indi cates a suitable base providedwith bolt or screw-holes 2, through which suitable fasvwork forsupporting themotor or driving mechanism which, in the present instance,

consists of a double clock-work mechanism driven by two springs 7 and 8,the winding post of each spring being journaled in the top and bottomplates 6 and 7 Each winding-post is provided at its lower end with abevel gear-Wheel 9, which meshes with a similar gear-wheel 10 on thewinding-shaft 11, mounted in bearings 12 and 13, bothshafts capable ofbeing rotated, by a suitable key, to wind up the springs.. By. pro

viding a double clock-work mechanism and driving it with two springs apowerful mo- I tor is obtairfed.

A governor or controller 14 is employed to obtain uniformity in the rateof speed of the clock-Work, which governor consists, preferably ofa fan15 mounted on a shaft 16 journaled in the plates 4 and 6. The shaft, asshown in Fig. 1, is provided with a pin ion 17, which meshes with agear-wheel 18 ing with a pinion 17 mounted on the upper end of shaft 15.The gear-wheel 16 is driven by a gear-whee 117", mounted on the post 7and meshing with a pinion 18 on the shaft 16", said post 7 being drivenby the clock work. By a peculiar construction of the fan-governor, therate of speed of the clock-work may be decreased or increased. This isaccomplished by providing each wing of the fan with an opening 19, andarranging movable slides 20 to open and close the openings. The slidesare mounted on a cross-bar 21, which is secured to a vertically-operatedrod 22, slidable in a bearing 23 on the shaft 16, as shown in Fig. 11.If it should be found necessary to decrease the speed of travel of theclock-work, the rod 22 is moved upward to close the openings 19, whichcauses the governor to revolve at a lower rate of speed, and thereby theclock work, a faster rate of speed being obtained by moving the rod 22downward to uncover the openings.

The top plate of the motor frame-work is provided with a pillar or post24, and passing through said pillar, and through the top-plate, is asquarecolumn 25,-to which is pivoted two arms 26 and 27, the free end ofeach arm being provided with a yoke 28. Each arm is pivoted to .thecolumn. 25 by a bolt 25, and adjustably held by a spring pressedadjusting-nut 26, as shown in Fig. 9. J ournaled in the yoke of arm 27is a shaft 29 having a head 30 to which is attached, by screws orbolts"suitably insulated from said head, a contact-cylinder 31, saidcontact-cylinder being provided with an arm or short shaft 32 on whichis secured a disk-electrode 33. The shaft 29 is provided with a bevelgear-wheel 34, which meshes with a similar gear-wheel 35 secured ontheend of a shaft 36, which is journaled in one end of the yoke and abearing 37 attached to the arm 27. The inner end of the shaft 36 isconnected to a driving shaft 38 by a flexible connection 39, theadjacent ends of'the two shafts being slitted or kerfed to receive a-key40,

which joins the two shafts together, so that rotary motion imparted toshaft 38 may be transmitted to shaft 36, the ends of both shafts beingincased by a coil spring 41,. as shown in Fig. 4, thus permittingshaft36 to have a vertical or rising and fallin movement with arm 27.The shaft 38 1's journaled in bearing-blocks 42 projecting from abracket 43 secured to the column 25, said shaft 38 being provided with agear-wheel 44, the purpose of which will be hereinafter explained. Y

Journaled the yoke ofarm 26, is a shaft 45having a head 46 to which isattached,

and suitably insulated therefrom, a contactcylinder 47. Thecontact-cylinder 47 is also is flexibly connected to a driving shaft 54by a flexible connection 55, similar in all respects to that shown inFig. 4, so as to allow said shaft 52 to. have the same rotary move-'ment, and the same rising and falling movement that is possessed by theshaft 36. The shaft '54 is journaled in bearing-blocks 56, projectingfrom a bracket 57 secured to the column 25, and is provided with agearwheel 58, for a purpose hereinafter explained. Each contact-cylinderis provided with a brush 59 supported between arms 59 of a box orbracket 59 secured to an insulatingblock 60.(shown in Fig. 3) whichprojects from the arm 26, (shown in Fig. 8), the brush beingadjustably-secured by means of a binding-post .61, screwed into theupper arm of the bracket 59", impinging against a clamping-plate 61. Theunderside of the arm 27 is formed with an inverted V-shape recess 62,and is provided with a vertical slot 62 through which passes afeed-screw 63 for moving the upper electrode downwand to adjust thedistance between the electrodes to the normal arc length. The lower endof the feed-screw is supported in a cushioned seat 64, preferablyconsisting of a leafspring supported by a coil-spring, as shown in Figs.1 and 2, said cushioned seat being for the purpose of permitting theelectrodes to be brought into contact to start the. arc. The feed-screwis provided with an adjustable wedgeishape nut 65, by meansof which theupper electrode may be adjusted relatively to the lower electrode. Tothe lower end of the feed-screw, above its flexible or cushioned seat,is rigidly attached a ratchet wheel 66, which is provided with a hub 67on which a setting-disk 68 is mounted, as shown in Figs. 5 and'5 saiddisk being pro.- vided with a spring-pressed pawl 69, adapted to engagethe teeth of the ratchet-wheel to lock the disk and ratchet wheeltogether.

Pivoted to the disk is aspring-actuated holding rod 70, which isprovided with a notch 71 adapted to be engaged by a trigger 72 fulcrumedon the column 25. One end'of the trigger is connected by a spring 70 toanfadjustable screw-threaded rod 71, which rod passes through a post 72" projecting from said column, and is heldin adjusted position byjam-nuts 72". The outer end of the'rod 70 is provided with a smallweight 73, to assist in maintaining its engagement with'the trigger, anda guide 74 is provided free or opposite end of the tripping-rod rests ona grooved tripping wheel 77 secured on the outer end of the shaft 45,said grooved wheel being provided with a notch or recess i 78, intowhich said free end of the trippingrod is caused to drop, by thetensioned force of a spring 79 attached to the other end of saidtripping-rod, at the end of each revolution of the electrodes. Alsoivoted to the disk 68 is a two-arm dog 80, one of said arms beingadapted to engage the inner edge of the pawl 69, and the otherarm'provided with an operating-cord or chain 81, as shown in Fig. 5,which, when pulled, causes the dog to force said pawl out of engagementwith the ratchet-wheel.

One of the winding-shafts 11, near its outer end, is provided with anoblique gear wheel 82 which meshes with a similar gearwheel 83 securedon the lower end of an. operating-shaft 84, by means of which motion isimparted, through the action of the motor or clock-Work, to theelectrodes, said gear-wheel 82 which is loose on its shaft, beingsecured to said shaft by a lock-nut 85, having a pin 86 entering a holein the face of said'wheel. The upper portion of the. operating-shaft 84is journaled in plates 87,

- secured to the bearing-blocks 42, and in plates 88, secured to thebearing-blocks v56, the lower portion of said operating-shaft beingjournaled in a plate 89, securedto the upper plate of the motor frame,and in plate 90, secured to blocks 91, 91, one of which blocks isfastened to one of thehposts 3 and forms an additional bearing for theouter end of one of the winding-shafts 11. Passing through the severalsets of bearingblocks and the plate 89, are screw-threaded rods 92, 92which, by means of jamnuts 93, hold said blocks and plate in firmposition. As a further means for rendering the lower set ofbearing-blocks more firm, a tie-rod,

consisting of parts 94 and 95, joined together by a turn-buckle 96, maybe employed to connect said set of bearing-blocks with the winding-shaftat the opposite side of the machine, as shown in Figs. 3, 8 and 9.

Secured on the shaft 38 is an oblique gearwheel 97, which meshes with asimilar gearwheel 98, mounted on the operating-shaft, and secured on theshaft 54 is an oblique gear-wheel 99, meshing with a similar gear--wheel-100, mounted on said operating-shaft,

m'otion being imparted to both electrodesby means of these gears, uponthe rotation of the operating-shaft. The upper end of the operatingshaft is provided with a knob 101, so that by removing lock-nut 85, saidshaft may be, rotated by .hand to revolve the electrodes independentlyof the clock-work.

The lamp is provided with screw-threaded rods 102' and 103, operative inbearingblocks 104, 104, and 105, 105, respectively,

106, by means of which attachment may be made to the frame or body of asearch light or moving picture apparatus, so that when attached theposition of the lamp may be A suitable tray 107 is arranged to catch thedust or fine particles of carbon dropping from the electrodes.

In operating the lamp, the lower arm 26 is adjusted to 'bring-the lowerelectrode to proper position, which is accomplished by means of a screwthreaded adjusting-rod erlyv adjusted, relatively to the lowerelectrode, and by tapping'the head of the feedscrew 63 the electrodesare brought toarc- "ing-position. In adjusting'the lower electrode, thegrooved wheel 7 7 is brought to a "position at which the extreme freeendof .the tripping-rod, will rest just at the rear or far edge of therecessed or cut-away-poror chain 81, which causes the dog 80 to forcethe pawl 69 out (if engagement with the until the notch 71 of thespring-actuated rod cord is released. The cord being released, the pawl69 is forced back by its spring into by locking said disk andratchet-wheel together. The governor, which is held inoperative by aslidable-rod 109, is set in 1110- brought into contact, and the electriccurrent turned on, the electrodes immediately begin to revolve andproduce light. After a complete revolution of the electrodes, whichlasts about five hours, the free end of the tripping-rod drops intothenotch in the grooved tripping wheel, causing the trigger to release thespring-actuated rod 70, which immediately forces the diski68, which islocked to the feed-screw through the medium of pawl and ratchet, torotate said feed-screw and bring the upper electrode again toarcing-position wi h the lower electrode, the revolution of thelectrodes continuing with? out interruption. When the free end of thetripping-rod has passed out of the notch in the grooved wheel, and isresting in the groove thereof, the tripping mechanism may be reset, asthe several parts will then be in position for the operation, or theresetting may be delayed until just before the electrodes complete theirsecond revolution, if desired. Instead of setting the mechanism forresetting the upper electrode by hand, I

changed at will bymanipulating the rods 108, after which the upperelectrode is proption of the wheel, as shown in Figs. Q'and 8; thetrigger is then set by a pull on the'cord ratchet wheel 66,- pe'rmitting the disk to be; rotated, independently ofthe feed-screw 63,

is engaged by the trigger 72, when the engagement withthe-ratchet-wheel, there-1 tion by pushing said slidable-bar out ofvcontact therewith. The electrodes being each rod being provided with jam-nuts 10.6,

may prefer to do it automatically, and in Figs. 12, 13 and 14, I haveshown such a mechanism attached to the lamp.

Attached to the lower plate of the motor connected one end of a link114:, the other.

end of said link being pivotally-connected to one corner or arm of arockable-plate 115, pivoted to a bracket 116, secured to the lower plateof the motor frame, as shown in Figs. 13 and 14. Pivoted to the othercorner or arm of the rockable-plate is one end of a link 117, the otherend of said link being pivoted to one corner or arm of a rockableplate118, which is pivoted to the bracket 57. or arm of therockable-plate-118, is an op crating-bar 119fprovided with a slot 120through which passes the pivot-pin of the spring-actuated rod 70, saidoperating-bar bar 119.

pm forces the link 114 forward, which causes ,lying directly under saidspring-actuated rod. Motion is'im arted to gear-wheel 112 by means of asma l gear-wheel 121 secured on one of the winding shafts 11.

In operation, nfotion being transmitted to gear-wheel,112, theeccentric-pin, being in which t-ime the pivot-pin of bar will be in theouter end of the slot in the operating- The movement of the eccentricthe plate 115 to rock on its pivot, pulling link 117 and causing theplate 118 to rock on its pivot; as plate 118 rocks, the operating-bar'will be drawn forward, the force exerted by said bar on the pivot pin ofthe spring actuated rod, causing the disk 68 to rotate, thespring-pressed pawl 69, in the meantime, slipping over the teeth of theratchet-wheel. When gear-wheel 112 shall have made half a revolution,the notch 71, in the spring-actuated rod, will be engaged .by thetrigger 72, and the disk and feedscrew locked together by the action ofthe spring-pressed pawl engaging the ratchetwheel, which, as beforestated, is secured to the feed-screw. As gear-wheel 112 completes itsrevolution, the eccentric-pin will cause the link 114 to moverearwardly, and also the operating-bar, until the inner end of the slotin said bar engages the pivot-pin of the spring-actuated rod 70. At thein-.

stant this occurs, the free end of the trippingrod will have droppedinto the recess 78, in the grooved wheel 77, tripping the trigger 72 andfreeing the feed-screw, through the medium of the locked disk to theaction of the spring-actuated rod 70, which forces the disk to rotate inthe direction opposite to its former described rotation, and causesPivotally attached to the other corner the feed-screw to turn in adirection to adjust or bring the upper electrode to arcing-position, theoperation being repeated upon every revolution of the wheel 112;

Having thus fully described my invention, what I claim is 1. Anarc-lamp, having in ,combination rotatable disk-electrodes journaled inpivoted arms, rotatable shafts for revolving the electrodes, said shaftsbeing journaled in bearings attached to said arms, and driving-shaftsflexibly coupled to the rotatable shafts, whereby thelatter shafts mayhave, with the pivoted arms, a rising and falling movement, and theelectrodes be revolved.

2. An arc-lamp', having in combination pivoted arms, a disk-electrodejournaled in each arm, a rotatable shaft adaptedto revolve theelectrodeysaid shaft being jour naled in suitable bearings attached tothe arm, driving-shafts journaled in fixed bearings, and flexibleconnections between the driving and rotatable shafts whereby the pivotedarms may have a vertical movement. '3. An arc-lamp, having incombination pivoted arms, a disk-electrode journaled ,in each arm, theshaft of each electrode being connected with a beveled gear-"wheel, arotatable shaft carried by each arm, each shaft being provided with agear-wheel in mesh with the gear-wheel connected with the electrode,driving-shafts flexibly-connected to the rotatable shafts, whereby thelatter shafts and the pivoted arms may have a vertical movement, andmeans for rotating the driving-shafts to cause the rotation of theelectrodes.

4. An arc-lamp, having in combination.

pivoted arms, a disk-electrode journaled in each arm, a rotatable shaftfor each elec-- trode, said shaft being composed of two parts coupledtogether by a flexible connection and provided with means for revolvingthe electrode, one of said parts being journaled in bearings carried bythe pivoted arm and capable of a vertical. movement with said arm, andthe other part being journaled in fixed bearings, and means for drivingthe flexibly-coupled shaft-s to cause the revolution of the electrodes.

5. An arc-lamp, having in combination rota-table disk-electrodesjournaled in pivoted arms, rotatable shafts 'journaled in bearingsattached to said arms, driving shafts flexibly-coupled to the rotatableshafts, means for driving the flexibly-coupled shafts, and. means forintermittently feeding one of the disk-electrodes.

6. An arc-lamp, having in combination pivoted arms, in each of which isjournaled a. disk-electrode, one of said arms capable of being adjustedto a fixed position, each arm being provided'with a flexibly-coupledshaft adapted to revolve the disk-electrode journaled therein, means fordriving the 7. An arc-lamp, havmg-in combination pivoted arms in whichare journaled .diskelectrodes, one of said arms capable of beingadjusted to a fixed position, each arm being provided -with aflexibly-coupled shaft adapted to revolve the disk-electrode journaledtherein, means for revolving the electrode, and means for intermittentlyfeed-- ing one of the electrodes. 8. An arc-lamp, having in combinationpivoted arms in which ,are journaled disk-' electrodes, one of said armscapable of be-' g a being provided with a flexible-coupled shaftadaptedto revolve the disk-electrode journaled therein,automatically-operated means for intermittently feeding one of saiddisk-electrodes, means for revolving the electrodes, and means fordriving the flexibly-coupled shafts. 9. An' arc-lamp, having incombination pivoted arms in which are journaled disk- -electrodes, oneof said arms capable of being adjusted toa'fixed position, each armbeing provided with a flexibly-coupled shaft adapted to revolve thedisk-electrode journaled therein, means for intermittently feeding oneof said electrodes, means 'for revolving both electrodes, mechanism forsetting-thejfeeding means in feeding-position, and means forautomatically freeing the A setting. mechanism whereby one oftheelectrodes may be moved, at the end of each revolution, to adjust thedistance between the electrodes tonormal arc-length. 10. An arc-lamp,having in combination pivoted arms in which are journaled disk;electrodes, 'and mechanism for moving one of the electrodes at the endof each revolution thereof, to adjust the distance between theelectrodes to normal arc length, said fmechanism comprising acushion-seated screw-rod, a/sett-ing-disk, means'for locking the disk tosaid rod, means for setting the disk and means for releasing said diskto "cause the revolution of the screw-rod.

11. An arc-lamp, having in combination pivoted arms in which arejournaled diskelectrodes, and a mechanism for moving one of theelectrodes at the end of each revolution thereof, to adjust the distancebetween the electrodes to normal arc-length, said mechanism comprising acushion-seated screw-rod, a setting-disk, means for automaticallylocking the disk to the screw-rod,

tion thereof, to adjust the distance between adjusted to a fixedposition, each' armv the electrodes to normal arc-length, said mechanismcomprising a "cushion-seated screw-rod, a setting-disk, means forlocking the disk to the screw-rod, a trigger for holding said disk inlocked position, a tripping- Wheel vand tripping-rod for releasing thetrigger to cause the releaseof the disk, atthe end of each revolution ofthe electrodes.

13. An arc-lamp, having in combination rotatable disk-electrodesjournaled in pivoted arms, rotatable shafts for revolving theelectrodes, said shafts being journaled in bearings attached to saidarms, driving shafts flexibly-coupled to the rotatable shafts, and a rodfor operating the driving shafts, said driving-shafts being providedwith gear-wheels meshing with gear-wheels on said rod, whereby theflexibly-coupled shafts may be rotated to revolve the electrodes.

14. An are-lamp, having in'combination pivoted arms, disk-electrodesjournaled in said arms, rotatable shafts adapted to revolve theelectrodes, said shafts being journaled in suitable bearings attached tosaid arms, driving-shafts flexibly-coupled to the rotatable shafts, arod for operating the driving-shafts, said driving-shafts being providedwith gear-wheels meshing with gear-wheels on said rod, and means foroperating the rod, whereby the flexibly-coupled shafts are rotated tocause .the revolution of the disk-electrodes.

15. An arc lamp, having in combination pivoted arms in which arejoiirnaled diskelectrodes provided with gear-wheels, rotatable shaftsprovided with gear-wheels meshing with the gear-wheels of theelectrodes, said shafts being carried by said arms, driving-shaftsflexibly-coupled to the rotatable shafts, means for rotating theflexibly-coupled shafts, and means for intermittently feeding one of thedisk-electrodes.

16. An arc-lamp, having in combination pivoted arms in which arejournaled diskelectrodes provided with gear-wheels, rotatable shaftsprovided with gear-wheels meshing with the gear-wheels of theelectrodes, said shafts being carried by said arms, drivingshaftsflexibly-coupled to the rotatable shafts, and a rod adapted to rotate'the shafts.

17 An arc-lamp, having in combination pivoted arms in which arejournaled diskelectrodes provided with gear wheels, rotatable shaftscarried by said arms, said shafts being provided with gear-wheelsmeshing with the gear-wheels of the electrodes, driving shaftsflexibly-coupled to the rotatable shafts, a rod adapted to operate theflexiblecoupled shafts, a motor for driving the rod,

mechanism for intermittently feeding one 'of the electrodes, andmechanism for setting the feeding-mechanism to feeding position.

18. An arc-lamp, having in combination pivoted arms in which arejournaled diskelectrodes provided with gear-wheels, rotatable shaftscarried by said arms, said shaft being provided with gear-wheels meshingwith the gear-wheels of the electrodes driving-shafts flexibly-coupledto the rotatable shafts, a rod adapted to operate the flexiblycoupled,shafts, a motor for driving the rod,

mechanism for intermittently feeding one of the electrodes, mechanismfor setting the feeding-mechanism, and means for automatically releasingthe setting-mechanism in presence of two witnesses.

at the end of each revolution'of the electrodes.

19.' An arc-lamp, having in combination pivoted arms in which arejournaled diskelectrodes, flexibly-coupled shafts arranged to revolvethe electrodes, one part of the flexibly-controlled shafts being carriedby the arms, means for rotating said shafts, and a mechanism for feedingone of the electrodes to arcing position, said mecharod to hold the diskin locked position, and

automatically-operated means for releasing the trigger to permit thedisk to turn the screw-rod, and thereby feed the electrode.

In testimony whereof I aflix my signature JOHN w. KENDRICK.

Witnesses:

' IRA GREEFEN,

WM. B. GRIFF EN.

